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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-3331
DTSTART:20140417T193000Z
DURATION:PT1H0M0S
DTSTAMP:20260419T193506Z
LAST-MODIFIED:20140321T140422Z
LOCATION:5280 Chamberlin Hall
SUMMARY:Detection of degree angular scale B-mode polarization with BIC
 EP2/Keck Array\, NPAC (Nuclear/Particle/Astro/Cosmo) Forum\, Grant Tep
 ly\, Caltech
DESCRIPTION:The BICEP2 experiment is a cosmic microwave background (CM
 B) polarimeter specifically designed to search for the signal of infla
 tionary gravitational waves in the B-mode power spectrum around l=80. 
  BICEP2 observed from the South Pole for three seasons from 2010 to 20
 12.  Using its full 3-year CMB data set\, we report an excess of B-mod
 e power at the angular scales of interest\, inconsistent with the null
  hypothesis at a significance of >5σ. The observed B-mode power  spec
 trum is well-fit by a lensed-LCDM + tensor theoretical model with tens
 or/scalar ratio r=0.20+0.07−0.05.  We will describe the BICEP2 instr
 ument\, observing strategy\, data analysis\, and results.  We will als
 o describe Keck Array\, a successor to BICEP2\, which is actively coll
 ecting sky data at both 100 and 150 GHz at high sensitivity for improv
 ed constraints on galactic foregrounds.
URL:https://www.physics.wisc.edu/events/?id=3331
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